ASTM A 153/A 153M Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
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ASTM A 153/A 153M Document Information:
Title
Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
ASTM International
Publication Date:
Apr 1, 2005
Scope:
(Footnote *)
This specification covers zinc coatings applied by the hot-dip process
on iron and steel hardware.
The hot-dip galvanizing process consists of parts being immersed in
molten zinc for a sufficient
time to allow a metallurgical reaction between iron from the steel
surface and the molten zinc,
resulting in the formation of Zn/Fe alloy layers bonding the coating
to the steel surface.
This specification is intended to be applicable to hardware items that
are centrifuged or otherwise
handled to remove excess galvanizing bath metal (free zinc). Coating
thickness grade requirements
reflect this.
This specification is applicable to orders in either inch-pound units
(as A 153) or in SI units (as
A 153M). Inch-pound units and SI units are not necessarily exact
equivalents. Within the text of
this specification and where appropriate, SI units are shown in
brackets. Each system shall be used
independently of the other without combining values in any way. In the
case of orders in SI units,
all testing and inspection shall be done using the metric equivalent
of the test or inspection
method as appropriate. In the case of orders in SI units, such shall
be stated to the galvanizer
when the order is placed.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. It is the responsibility of the user of this standard to
establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
Footnote * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- coatings, zinc
- galvanized coatings
- steel hardware, zinc coated
- steel products, metallic coated
- zinc coatings, steel products
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